package com.chengge.chengge.demos.web.mapper;

public class check {
    public static void main(String[] args)
    {
        System.out.println("hello world");
        int c = 555;
        System.out.println(c);
        int d = 123;
        System.out.println(d);
        long a = 1;
        long b = a + 1;
        System.out.println(b);
        System.out.println(a);
    }
}
